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3GPPFDD_ULTrCHMulti



Description: Uplink TrCH multiplexing
Library: 3GPPFDD, TrCH Multiplexers & Coders
Class: SDF3GPPFDD_ULTrCHMulti
Derived From: 3GPPFDD_ULCCTrCHBase

Parameters

Name

Description

Default

Unit

Type

Range

SpecVersion

version of specifications: Version_03_00, Version_12_00, Version_03_02

Version_12_00

 

enum

 

TrCHNum

number of Transport Channels

1

 

int

[1:32]

RMArray

rate matching attributes of all Transport Channels

1.0

 

real array

(0.0:1.0] if SpecVersion=Version_03_00;
[1:256] if SpecVersion=others;
array size shall be equal to TrCHNum

DynTFSetArray

dynamic part of TF set of all Transport Channels

244 976

 

int array

range is the same as DynTFSet in 3GPPFDD_CRCEncoder

TFSetSizeArray

Transport Format set size of all Transport Channels

1

 

int array

[1, inf) for each element;
sum of the elements shall be equal to the number of pairs in DynTFSetArray;
array size shall be equal to TrCHNum

TTIArray

Transmission Time Interval of all Transport Channels

0

 

int array

[0,1,2,3] for each element;
array size shall be equal to TrCHNum

CRCArray

number of CRC bits of all Transport Channels

3

 

int array

[0,1,2,3,4] for each element;
array size shall be equal to TrCHNum

CHCodingTypeArray

channel coding type of all Transport Channels

1

 

int array

[0,1,2] for each element;
array size shall be equal to TrCHNum

TrCHType

transport channel type: RACH_Type, DCH_Type

DCH_Type

 

enum

 

PuncLimit

puncturing limit for uplink

0.8

 

real

(0.0:1]

MinSF

minimum spreading factor: SF_256, SF_128, SF_64, SF_32, SF_16, SF_8, SF_4

SF_4

 

enum

 
Pin Inputs

Pin

Name

Description

Signal Type

1

InLen

input data size of each transport channel

multiple int

2

DataIn

input data from each transport channel

multiple int

3

Index

transport channel index

multiple int
Pin Outputs

Pin

Name

Description

Signal Type

4

DataOut

output data

int

5

PCNout

physical channel number

int

6

SltFout

slot format

int

Notes/Equations
  1. This model is used to implement uplink transport channel multiplexing. Every 10 msec, one radio frame from each TrCH is delivered to the TrCH multiplexing. These radio frames are serially multiplexed into a coded composite transport channel (CCTrCH).
    The bits input to the TrCH multiplexing are denoted by fi1, fi2, fi3, ..., fiV. where i is the TrCH number and Viis the number of bits in the radio frame of TrCH i. The number of TrCHs is denoted by I. The bits output from TrCH multiplexing are denoted by s1, s2, s3, ..., sS, where S is the number of bits, that is,

    .

    The TrCH multiplexing is defined by the following relations:

    Sk = f1k    k = 1, 2, ..., V1
    Sk = f2,(k - V1)    k = V1 + 1, V1 + 2, ..., V1 + V2
    Sk = f3,(k -(V 1 + V2))    k = (V1 + V2) + 1, ( V1 + V2) + 2, ..., ( V1 + V2) + V3
    .
    .
    .
    Sk = fI,(k -(V1 + V2 + ... + VI -1))
    k = (V1 + V2 +...+ VI-1) + 1, ( V1 + V2 +...+ VI-1) + 2 ..., ( V1 + V2 +...+ VI-1) + VI

  2. This model fires once per radio frame. Each firing, this model receives transport channel index and effective length of each transport channel at pins Index and InLen. This model receives a block of data from each transport channel according to those inputs, then merges them into one data block of CCTrCH and outputs this data block. This model outputs the physical channel number at pin PCNout, and outputs slot format at pin SltFout.
  3. All transport channel information must be in the form of arrays.
    The DynTFSetArray parameter requires an integer array. The correct format is transport block size 1, transport block set size 1, transport block size 2, transport block set size 2, etc. The size of this array must be a multiple of 2, and the transport block set size must be a multiple of the relative transport block size.
    TFSetSizeArray indicates how many pairs of transport block and transport block set sizes are contained in a certain transport channel. For example:
    • TFSetSizeArray = "3 2" means the first three pairs of transport block size and transport block set size belong to the first transport channel, and the next two pairs belong to the second transport channel.
    • TFSetSizeArray = "2 2 2" means the first two pairs of transport block size and transport block set size belong to the first transport channel, the next two pairs belong to the second transport channel and the last two pairs belong to the third transport channel.
      When setting TTIArray, CRCArray and CHCodingTypeArray values, refer to the following table.
      Settings for TTIArray, CRCArray and CHCodingTypeArray Values
      TTIArray CRCArray CHCodingTypeArray
      Time Value Coding Value Coding Value
      10 msec 0 No CRC 0 No Coding 0
      20 msec 1 8 bits 1 1/2 CC 1
      40 msec 2 12 bits 2 1/3 CC 2
      80 msec 3 16 bits 3 1/3 TC 3
          24 bits 4    
      CC = convolutional coding; TC = turbo coding
  4. The PuncLimit parameter denotes the variable PL defined in [1]. Refer to [1] for details regarding this variable in rate matching algorithm.

References
  1. 3GPP Technical Specification TS 25.212 V3.2.0, "Multiplexing and channel coding (FDD)" Release 1999.
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